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1-(1H-1,2,4-Triazol-1-yl)ethanone

Also known as: 1-Acetyl-1,2,4-triazole, 1-Acetyl-1H-1,2,4-triazole, 1-(1H-1,2,4-triazol-1-yl)ethan-1-one, 1-[1,2,4]Triazol-1-ylethanone, Ethanone, 1-(1H-1,2,4-triazol-1-yl)-, 1H-1,2,4-Triazole, 1-acetyl-(6CI,7CI,8CI,9CI)

1-(1H-1,2,4-Triazol-1-yl)ethanone (CAS 15625-88-4) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C4H5N3O and a molecular weight of 111.10200 g/mol. Key properties include a boiling point of 241.6ºC at 760mmHg, a density of 1.31g/cm3 and a flash point of 99.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
15625-88-4
Jingsj CID
J-1058455-1
Molecular Formula
C4H5N3O
Molecular Weight
111.10200 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point241.6ºC at 760mmHg
Density1.31g/cm3
Flash Point99.9ºC
Exact Mass111.04300
PSA47.78000
Vapor Pressure0.0356mmHg at 25°C
Refractive Index1.604

Frequently Asked Questions

What is the CAS number of 1-(1H-1,2,4-Triazol-1-yl)ethanone?

The CAS number of 1-(1H-1,2,4-Triazol-1-yl)ethanone is 15625-88-4.

What are the molecular formula and molecular weight of 1-(1H-1,2,4-Triazol-1-yl)ethanone?

1-(1H-1,2,4-Triazol-1-yl)ethanone has molecular formula C4H5N3O and molecular weight 111.10200 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1-(1H-1,2,4-Triazol-1-yl)ethanone (CAS 15625-88-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1058455-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.